diff -r 000000000000 -r 6474c204b198 b2g/components/FxAccountsUIGlue.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/b2g/components/FxAccountsUIGlue.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,78 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict"
+
+const { interfaces: Ci, utils: Cu } = Components;
+
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+Cu.import("resource://gre/modules/Services.jsm");
+Cu.import("resource://gre/modules/Promise.jsm");
+Cu.import("resource://gre/modules/FxAccountsCommon.js");
+
+XPCOMUtils.defineLazyServiceGetter(this, "uuidgen",
+                                   "@mozilla.org/uuid-generator;1",
+                                   "nsIUUIDGenerator");
+
+XPCOMUtils.defineLazyModuleGetter(this, "SystemAppProxy",
+                                  "resource://gre/modules/SystemAppProxy.jsm");
+
+function FxAccountsUIGlue() {
+}
+
+FxAccountsUIGlue.prototype = {
+
+  _contentRequest: function(aEventName, aData) {
+    let deferred = Promise.defer();
+
+    let id = uuidgen.generateUUID().toString();
+
+    SystemAppProxy.addEventListener("mozFxAccountsRPContentEvent",
+                                    function onContentEvent(result) {
+      let msg = result.detail;
+      if (!msg || !msg.id || msg.id != id) {
+        deferred.reject("InternalErrorWrongContentEvent");
+        SystemAppProxy.removeEventListener("mozFxAccountsRPContentEvent",
+                                           onContentEvent);
+        return;
+      }
+
+      log.debug("Got content event " + JSON.stringify(msg));
+
+      if (msg.error) {
+        deferred.reject(msg);
+      } else {
+        deferred.resolve(msg.result);
+      }
+      SystemAppProxy.removeEventListener("mozFxAccountsRPContentEvent",
+                                         onContentEvent);
+    });
+
+    let detail = {
+       eventName: aEventName,
+       id: id,
+       data: aData
+    };
+    log.debug("Send chrome event " + JSON.stringify(detail));
+    SystemAppProxy._sendCustomEvent("mozFxAccountsUnsolChromeEvent", detail);
+
+    return deferred.promise;
+  },
+
+  signInFlow: function() {
+    return this._contentRequest("openFlow");
+  },
+
+  refreshAuthentication: function(aAccountId) {
+    return this._contentRequest("refreshAuthentication", {
+      accountId: aAccountId
+    });
+  },
+
+  classID: Components.ID("{51875c14-91d7-4b8c-b65d-3549e101228c}"),
+
+  QueryInterface: XPCOMUtils.generateQI([Ci.nsIFxAccountsUIGlue])
+};
+
+this.NSGetFactory = XPCOMUtils.generateNSGetFactory([FxAccountsUIGlue]);